So since I got my rear LCA's my car is been vibrating under acceleration until 30mph. They are Blackworks Racing Lower control arms. I thought getting an alignment would solve the problem, but it continued. I posted a video of the noise and the noise gets louder when i turn the wheel to the left.

http://www.youtube.com/watch?v=02xAI...layer_embedded

 

Did you check and see if all the bolt is tight because the same thing happen to mine but mine wasnt that as loud as yours and mine gets louder when i turn to the right... hope it helps

 

which bolt was loose?

 

funny you say that too bc that was the first thing i thought of

 

LOL i forgot which bolt but best if you go over the whole thing again just to make sure everything place properly...